Air box for bicycles



FIG. 1 is a left side elevation view of an air box for bicycles showing my new design;

FIG. 2 is a front elevation view thereof looking from the left of FIG. 1;

FIG. 3 is a top plan view thereof;

FIG. 4 is a rear elevation view thereof; and,

FIG. 5 is a bottom view thereof turned slightly with respect to FIGS. 1 and 3.

The broken lines in FIG. 1 are for illustrative purposes only. 

The ornamental design for an air box for bicycles, as shown and described. 